...do not make a good combination. Aside from the obvious economic and human costs, it makes statistician's lives horrible. My friend was at the airport at 7.30am three days in a row for a flight which was cancelled each time because it was raining in Yambio. The poverty survey currently being conducted has had to replace NINE enumeration areas because the survey team turned up and NOBODY WAS THERE. The whole village had got up and left, there was nobody to interview in the entire area.